This is a complete list of all Sleep Train locations along with their geographic coordinates. Sleep Train was one of the top three mattress retailers in the United States and the largest on the West Coast. It was founded by Dale Carlsen in June 1985. Sleep Train stores carried mattresses manufactured by Sealy, Stearns & Foster, Simmons, Vera Wang by Serta, and Tempur-Pedic. Sleep Train also carried headboards by Fashion Bed Group and Modus International, as well as a variety of bedding accessories. It was based in Rocklin, California. Sleep Train has rebranded to Mattress Firm.